JPH0886822A - Wire harness inspection instrument - Google Patents

Abstract

PURPOSE: To provide a wire harness inspection instrument which can reduce the number of managing points and can be efficiently used and is easy to be handled. CONSTITUTION: A high-order machine connection part and a low-order machine connection part are arranged for connection with a communication cable 19. A signal input/output means 12 is provided to input or output a signal to wires of a wire harness 22. A normal wire data memory means 13 is provided to store acceptance data and a collation judgment means 14 to compare a data detected with an acceptable data stored in the normal wire data memory means 13 for judging the propriety thereof. A master/slave setting means is provided to set a master machine M for governing the management, judgment and processing of information and a slave machine S under the control of the master machine M. A synchronizing means is provided to take a timing for a parallel processing between wire harness inspection instruments. A communication means 17 is provided to transmit or receive data through the communication cable 19 and a control section 18 to control the means 12-17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness inspection device for inspecting the quality of wiring of a wire harness.

[0002]

2. Description of the Related Art As this type of wire harness inspection device, there is a structure in which the number of inspectable wires is uniquely determined. For example, as shown in FIG. Then, each relay connector 3 on the other end side of the relay cable 1 is set at a predetermined position on the inspection table 4 by connecting to the connection portion of No.

After connecting the terminal connectors 6 provided at the respective ends of the wire harness 5 to be inspected to the corresponding relay connectors 3, the start switch 7 on the wire harness inspecting device 2 side is operated by inputting the wire. The harness 5 is configured to be inspected.

The operation of the wire harness inspection device 2 will be described with reference to the flowchart shown in FIG. 10. First, the power supply of the wire harness inspection device 2 is turned on (step S1). The self-diagnosis is executed by turning on the power (step S2). Here, the input / output check of the memory, the presence / absence of data, the presence / absence of data destruction, etc. are confirmed.

Next, it is judged whether or not there is pass data that is the reference data for the inspection (step S3). If there is no pass data, the pass data is input by the data input means (step S4) and stored in the memory. Remembered. This data input includes communication from a personal computer, floppy disk, magnetic card, IC card, teaching, fixed data and the like.

After that, each terminal connector 6 of the wire harness 5 to be inspected is connected to each relay connector 3 of the inspection table 4.
(Step S5). In this state, the inspection is started by inputting the start switch 7 (steps S6 and S7).

When the inspection is started, the wire harness inspection device 2 sequentially reads the inspection data of the wire harness 5 (step S8), compares the read contents, that is, the detected data with the previously stored pass data, and If it does, it is determined to be pass, and if they do not match, it is determined to be fail (step S9).

If the result is acceptable, an indicator, a lamp,
It is notified by a buzzer or the like (step S10). In addition, this state is reset manually or automatically.

Upon confirmation of this notification of acceptance, the worker removes the wire harness 5 from the inspection table 4 (step S11), the inspection of the wire harness 5 is completed, and the wire harness 5 to be inspected next is connected. (Step S5), and the same procedure is repeated.

On the other hand, if it is determined in step S9 that the result is a failure, the details of the failure are determined in the order of detection, and the result is notified by a display or a printer (step S12). For example, the defect is determined as disconnection (unwired) / short circuit / miswiring, and the terminal number is notified.

If the inspection result is unacceptable, the worker repairs according to the content of the defect (step S1).
3) If the defective portion is eliminated, the process proceeds to step S10.

The sampling of the inspection data is shown in FIG.
As shown in FIG. 12 and FIG. 12, a case where the number of input / output terminals for inspection is 60 will be described as an example.

When confirming the connection state of the connected wire harness 5, an inspection signal is output from the first terminal,
The terminal to which the signal is input is sampled. In this case, as shown in FIG. 11, only the 32nd terminal is input, and it is confirmed that the 1st terminal and the 32nd terminal are connected.

Similarly, the second terminal, the third terminal, ...
-Inspection signals are sequentially output up to the 60th terminal, and the terminals to which the signal is input are sampled.

The signal output time T of the inspection signal at each terminal
1 is appropriately determined from the propagation delay time of the electric signal, and the output of the inspection signal of each terminal and the sampling of the data are shown in FIG.
As shown in FIG. 3, the inspection signals output from the terminals are controlled so that they are shifted by a predetermined time T2 so that they do not overlap.

On the other hand, there is also a wire harness inspection apparatus equipped with a dedicated input / output unit so that the number of wires inspected in a predetermined range can be increased or decreased. For example, it is as disclosed in Japanese Patent Laid-Open No. 5-288791.

[0017]

However, according to the wire harness inspecting device having a structure in which the number of inspectable wires is uniquely determined, it is impossible to increase the number of inspectable wires. However, the number of wires of the wire harness to be inspected varies from one to several thousand.

Therefore, when the number of wires for inspection is insufficient, it is necessary to separately prepare another type of wire harness inspection device for multiple wires. In addition, since it is wasteful to use a wire harness inspection device for multiple wirings to inspect a small number of wires, it is necessary to prepare a wire harness inspection device for small wirings.

That is, in this type of wire harness inspecting apparatus, it is necessary to prepare or manage many kinds of wire harness inspecting apparatuses, from a wire harness inspecting apparatus for small wiring to a wire harness inspecting apparatus for multiple wiring. There is a need for multi-product management of the device, and in order to use the device efficiently, it is necessary to allocate the device in consideration of the number of inspectable wires of the device and the number of wires to be inspected.
There was a difficulty in usability.

Further, in a wire harness inspection apparatus equipped with a dedicated input / output unit so that the number of wires inspected in a predetermined range can be increased or decreased, the number of wires can be increased or decreased within a certain range. Although it has the advantage that it can be used, it could not be operated by the input / output unit alone without the inspection device body.

When such an additional unit type inspection apparatus is used, the number of inspection apparatus bodies must be the same as the number of inspection steps that can be accommodated, and many units are required when only a small number of inspection steps are required. When the number of inspection steps exceeds the number of inspection device main bodies, there is an inconvenience that the inspection device main body cannot be used unless the inspection device main body is separately purchased.

That is, it is necessary to separately manage the inspection device main body and the extension unit, which leads to an increase in the number of management points, and it is necessary to purchase an additional inspection device main body despite a small number of circuits and a large number of units in the inspection process. However, there is a drawback that the use efficiency is deteriorated.

In view of the above problems, it is an object of the present invention to provide a wire harness inspecting apparatus which can reduce the number of control points, can be used efficiently, and is easy to use.

[0024]

The technical means for achieving the above object is a wire harness inspection for inspecting the quality of the wiring state by detecting the presence or absence of continuity between the respective wiring positions of the wire harness. In the device, an upper device connecting part and a lower device connecting part for connecting to another wire harness inspection device with a communication cable, an inspected harness connecting part in which the inspected wire harness side is connected, and a connected wire harness The signal input / output means for inputting / outputting a signal to / from each wiring, the data storage means for storing the inspection information, and the inspection information stored in the data storage means and the detected data are compared to judge pass / fail. The collation judging means and the wire harness inspection device itself manage information.
Master / slave setting means for setting whether to be a master machine that governs judgment / processing or a slave machine that is under the control of the master machine, and the timing of parallel processing between each wire harness inspection device connected to each other. In other words, it is provided with a synchronization means, a communication means for transmitting and receiving data through the communication cable, and a control section for controlling each means.

Further, the master / slave setting means may automatically assign the master / slave device to the upper / lower order depending on the connection state of the upper / lower device connection section by the communication cable. Good.

Furthermore, the inspection information may be downloaded to the slave machine from the master machine between the wire harness inspection machines connected to each other, and parallel processing may be performed by the inspection machines according to the inspection machine information. .

Further, the structure may be such that the timing of the parallel processing by the synchronizing means is performed by a common timing clock.

[0028]

According to the present invention, the wire harness inspecting device can function as a single unit, and the wire harness inspecting devices can be integrally connected to each other by connecting the wire harness inspecting devices to each other by a communication cable. The harness inspection device should be connected.

Therefore, it is not necessary to prepare many different kinds of wire harness inspection devices according to the number of wires of the wire harness to be inspected, the number of equipment management points can be reduced, and many different kinds of wire harness inspection can be performed. There is no need to learn how to use the device, improving usability.

Also, by changing the number of connected wire harness inspection apparatuses of the same type, it is possible to cope with a small number of wirings to a large number of wirings, so that the inspection apparatuses can be used efficiently and the allocation work can be performed easily.

Further, in the structure in which the master / slave setting means assigns the master device and the slave device to the upper / lower order depending on the connection state of the upper device connection part and the lower device connection part by the communication cable, Since the slave units are automatically assigned to the upper and lower levels, the usability can be improved.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to the drawings. In FIG. 1 and FIG. 2, 11 is a wire harness inspection device, which is a signal input / output means 12, a normal wiring data storage means 13, and a collation. Judgment means 14, master / slave setting means 15, synchronization means 16, and communication means 17
And a control unit 18.

The wire harness inspecting device 11 is connected to another wire harness inspecting device 11 by a communication cable 19, and is connected to a host device connecting portion 20 and a subordinate device connecting portion 2.
1, a wiring harness 22 to be inspected is connected through a relay cable 23, a harness connecting portion 24 to be inspected, an input / output connecting portion 25 to which a pass indicator, a printer and the like are connected are provided.

The signal input / output unit 12 is controlled so as to output an inspection signal to each wiring of the connected wire harness 22 and detect the wiring to which the inspection signal is input.

The normal wiring data storage means 13 is composed of a memory or the like, and is controlled so as to rewritably pass data which is reference data as inspection information.

The collation judging means 14 is controlled so as to judge the quality by comparing the pass data stored in the normal wiring data storage means 13 with the inspection data detected by the inspection.

The master / slave setting means 15 is
The wire harness inspection device 11 itself manages information, makes judgments,
The master machine M that controls the process and the slave machine S that is under the control of the master machine M are controlled to be set.

In the case of the present embodiment, depending on the connection state of the host device connection section 20, the host device connection section 21 and the communication cable 19, the master / slave setting means 15 assigns the master / slave machine S to the master / slave. Done automatically by.

That is, a plurality of wire harness inspection devices 1
When the 1s are connected to each other by the communication cable 19, and the host device connecting section 20 of the wire harness inspection device 11 is not connected by the communication cable 19, there is no connected host device and the device itself is the top device. And is set as the master machine M. In addition, the upper device connecting portion 20 and the lower device connecting portion 2 of the wire harness inspection device 11
In the case where each of the above-mentioned 1 is connected to another wire harness inspection device 11 by the communication cable 19, the slave machine S to which the upper machine and the lower machine are connected.
Is set as. Furthermore, when the lower-level device connecting portion 21 of the wire harness inspection device 11 is not connected by the communication cable 19, it is determined that there is no connected lower-level device, and the device itself is the lowest-level device, and is set as the slave device S. To be done.

As shown in FIG. 3, the communication cable 19 is provided with a short-circuit terminal portion 19a (numbers 8 and 9 in the figure), and the upper-level equipment connecting portion 20 and the lower-level equipment of the wire harness inspection apparatus 11 are provided. When the communication cable 19 is connected to the connection portion 21, it is short-circuited by the short-circuit terminal portion 19a, so that it is recognized whether or not the communication cable 19 is connected. Then, each slave machine S following the master machine M is slave 1 (S1), slave 2 (S2), ... Controlled to be assigned a number.

The synchronizing means 16 is controlled so as to output a timing clock so as to set the timing of parallel processing between the wire harness inspection devices 11 connected to each other.

The communication means 17 is controlled so as to send and receive data between the wire harness inspection devices 11 through the communication cable 19.

The control unit 18 is composed of a CPU and includes the signal input / output unit 12, normal wiring data storage unit 13, collation determination unit 14, master / slave setting unit 15, synchronization unit 16, and communication unit 17. Is configured to control.

Then, an appropriate number of wire harness inspection devices 11 are connected to each other by a communication cable 19 in accordance with the number of wires of the wire harness 22 to be inspected. At this time, when connecting to the wire harness inspecting device 11 which is a higher-level device, the lower-level device connecting portion 21 on the higher-level device side and the higher-level device connecting portion 20 of itself are connected with the communication cable 19. Also,
When connecting to the wire harness inspection device 11 that is a lower-level device, the higher-level device connecting part 20 on the lower-level device side and its own lower-level device connecting part 21 are connected with the communication cable 19. Then, the wire harness 22 may be connected via the relay cable 23 in the same manner as the above-mentioned conventional method, and the quality of the wiring state of the wire harness 22 may be inspected.

The operation of the wire harness inspecting device 11 will be described with reference to the flowcharts shown in FIGS. 4 and 5. A proper number of wire harness inspecting devices 11 corresponding to the number of wires of the inspected wire harness 22 are connected by the communication cable 19. In a state where they are connected to each other, the respective power supplies of the respective wire harness inspection devices 11 are turned on (step S21). When the power is turned on, each wire harness inspection device 11 executes a self-diagnosis (step S
22). Here, the input / output check of the memory, the presence / absence of pass data, the presence / absence of data destruction, etc. are confirmed.

Next, it is judged whether or not there is pass data that is the reference data for the inspection (step S23), and if there is no pass data, the pass data is input by the data input means (step S24), and normal wiring is performed. It is stored in the data storage means 13. This data is input from the personal computer 27 to the connection cable 2 as shown in FIG.
There are communication through 8 and others such as floppy disk, magnetic card, IC card, teaching, fixed data and the like.

After that, each wire harness inspection device 11
External connection confirmation is made between them (step S25).
In this case, depending on the connection state of the communication cable 19, the upper and lower sides of each wire harness inspection device 11 are recognized, and the master machine M is recognized. Then, after recognizing the master machine M, the connection is confirmed with the slave machine S (slave 1), which is a subordinate to the master machine M, in order to confirm the overall connection state. Slave 1
Similarly confirms the connection to the slave device S (slave 2), which is a subordinate device to the slave device S.
Confirm the connection up to (slave n). In this process, slave numbers are assigned to the slave units S in order from the higher order. After the final slave machine S arrives, the final slave number is returned to the higher order. By this operation, the master machine M recognizes the connected number.

Then, the master machine M confirms the number of connected devices, and if the number set as the pass data matches the number of connected devices, it is possible to inspect. If they do not match, the inspection is not performed and the printer , Buzzer, etc. This prevents mistakes in the number of connected units.

In each of the wire harness inspecting devices 11 connected as described above, the highest-level machine is the master machine M, and the slave 1 (S1) from the side closer to the master machine M,
Slave 2 (S2) ... Slave n (Sn) are automatically set.

Next, if the pass data stored in the master machine M matches the number of connected devices, the master machine M downloads the pass data to each slave machine S before the inspection through the communication cable 19 ( Step S26).
The downloaded data includes at least three contents of the inspection signal output terminal, output timing, and correct wiring state. In addition, this download is performed only once before the inspection after the connection of each wire harness inspection device 11 is completed, and after that, when the power is turned off or the connection state is changed, and when the data is destroyed. Retained except.

Next, each terminal connector of the wire harness 22 to be inspected is connected to each relay connector of each relay cable 23 arranged at a predetermined position of the inspection table, as described above (step S27). In this state, the inspection is started by inputting the start switch (steps S28 and S29).

When the inspection is started, each wire harness inspection device 11 sequentially reads the inspection data of the wire harness 22 (step S30).

That is, the inspection signal is sequentially output from a predetermined terminal in synchronization with the timing clock output from the synchronizing means 16. At this time, the terminals to which the inspection signals are output and the order thereof are in accordance with the downloaded acceptance data. Also,
The inspection signal is output and all terminals are sampled within one cycle of the timing clock.

Each wire harness inspection device 11 simultaneously performs this sampling within the input / output range of its own device. Therefore, at the time of connection, the data of all terminals are dispersed and taken in by each wire harness inspection device 11. And
To eliminate noise, all terminals are sampled at least twice. In addition, sampling is performed for a fixed time t after the inspection signal is output.
It takes place after a certain period. This fixed time t is appropriately determined mainly by the propagation delay time until the inspection signal is transmitted to each terminal. Then, in synchronization with the timing clock, output of the inspection signal and sampling of all terminals are repeated for the number of terminals,
After the sampling is finished, the output of the inspection signal is stopped.

After the sampling is completed, the master machine M stops the timing clock, and in response to the request from the master machine M, the sampling data is transferred from each slave machine S to the master machine M to collect the data (step S31).
That is, since each wire harness inspection device 11 has only the connection information within the input / output range of its own device, it is not possible to determine the quality of the wiring state as a whole, and the information held by each wire harness inspection device 11 is once It collects in the master machine M of the table.

The master machine M compares the collected data with the pass data stored in advance, and if they match, it is judged as pass, and if they do not match, it is judged as fail (step S32).

If the result is acceptable, an indicator, a lamp,
It is notified by a buzzer or the like (step S33). In addition, this state is reset manually or automatically.

Upon confirmation of the acceptance notification, the worker removes the wire harness 22 from the inspection table (step S34), the inspection of the wire harness 22 is completed, and the wire harness 22 to be inspected next is connected. (Step S27), the same procedure is repeated.

On the other hand, if it is determined in step S32 that the result is a failure, the details of the failure are determined in the order of detection, and the result is notified by a display or a printer (step S35). For example, the defect is determined as disconnection (unwired) / short circuit / miswiring, and the terminal number is notified. Here, a disconnection (unwired) means a state where wiring is not made where it should be wired, and a short circuit means a state where wiring is made where it should be wired and it is also wired to other places. The erroneous wiring means a state in which the wiring is not performed where it should be, but is wired to another.

If the inspection result is unacceptable, the worker repairs according to the contents of the defect (step S3).
6) If the defective portion is eliminated, the process proceeds to step S33.

Sampling of the inspection data will be described by taking as an example a case where the number of input / output terminals for inspection of each wire harness inspection device 11 is 60, as shown in FIGS. In this case, three wire harness inspection devices 11 are connected.

When confirming the connection state of the connected wire harness 22, the inspection signal is output from the first terminal and all terminals are sampled. In this case, as shown in FIG. 6, only the 125th terminal is input, and it is confirmed that the 1st terminal and the 125th terminal are connected.

Similarly, the second terminal, the third terminal, ...
-Inspection signals are sequentially output up to the 180th terminal and the input terminals are sampled.

The output and sampling of the inspection signal are performed in synchronization with the timing clock so that the inspection signals output from the terminals do not overlap, as shown in FIGS. That is, the timing clock determines the timing at which the inspection signal is output from the terminal determined by the pass data and the data of each terminal to which the signal is input is sampled. Perform parallel processing synchronously.

Although an auxiliary clock head is used in this example to notify that the timing clock starts, it may be a constant high level signal or a clock. Then, the period t1 of the timing clock is appropriately determined mainly from the resistance and capacitance of each single wire and the propagation delay time of the electric signal caused by the processing (length, bundling, etc.) state.

As described above, the wire harness inspection devices 11 can be integrally connected by connecting each other with the communication cable 19, and the necessary number of wire harness inspections can be performed according to the number of wires of the wire harness 22 to be inspected. Device 1
1 may be connected.

Therefore, as in the conventional case, the wire harness 2
It is not necessary to prepare several kinds of wire harness inspection devices of different types according to the number of wirings of 2, and it is sufficient to prepare a plurality of single-type wire harness inspection devices 11.
The number of equipment management points can be reduced and usability is improved without having to learn how to use various types of wire harness inspection devices.

Further, by changing the number of connected wire harness inspection apparatuses 11 of the same type, it is possible to cope with a large number of wirings from a small number of wirings by a single unit to multiple wirings by connecting a plurality of units, so that the inspection apparatus 11 can be used efficiently. Not only can it be done, but its allocation work can also be done easily.

The master / slave setting means 15 automatically assigns the upper and lower layers of the master machine M and the slave machine S depending on the connection state of the upper machine connection section 20 and the lower machine connection section 21 by the communication cable 19. Therefore, the usability can be improved from this point as well.

In the above description, the case where the number of input / output terminals for inspection of the wire harness inspection device 11 is 60 terminals has been described as an example, but the number of input / output terminals may be 100 terminals or the like. A method of connecting and using the wire harness inspection devices 11 having different numbers of input / output terminals may be used.

Further, although the inspection is started by the start switch, the inspection is stopped at all passing, and the passing state is manually or automatically reset and waits for the inspection, the inspection is always repeated. It may be.

Further, in collecting data for the master machine M, a method of collecting only defective data may be adopted from the viewpoint of data transfer efficiency.

Further, when inspecting the wire harness 22, a method of inspecting a completed product of the wire harness 22 or a method of inspecting while assembling may be used.

[0074]

As described above, according to the wire harness inspecting device of the present invention, the upper device connecting part and the lower device connecting part for connecting to another wire harness inspecting device with the communication cable, and the wire harness to be inspected. A harness connection part to be inspected whose side is connected, a signal input / output means for inputting / outputting a signal to / from each wiring of the connected wire harness, a data storage means for storing inspection information, and a data storage means Collation determining means for comparing the detected inspection information with the detected data to determine pass / fail, and a master machine that the wire harness inspection apparatus itself controls information management / judgment / processing and a slave under the control of the master machine Master / slave setting means for setting whether to become a machine,
It comprises a synchronization means for timing the parallel processing between the wire harness inspection devices connected to each other, a communication means for transmitting and receiving data through the communication cable, and a control section for controlling the respective means. , It is not necessary to prepare several kinds of wire harness inspection devices of different types according to the number of wires of the wire harness, and it is sufficient to prepare a plurality of single type wire harness inspection devices.
This has the advantages that the number of equipment management points can be reduced, and there is no need to learn how to use various types of wire harness inspection devices, improving usability.

Further, by changing the number of connected wire harness inspection apparatuses of the same type, it is possible to cope with a large number of wirings from a small number of wirings by a single unit to multiple wirings by connecting a plurality of units, so that the inspection apparatus can be used efficiently. At the same time, there is an advantage that the allocation work can be performed easily.

Further, depending on the connection state of the host unit connection unit and the host unit connection unit via the communication cable, the master / slave setting means sets the host unit of the master unit and the slave unit.
In the structure in which the subordinates are assigned, the master and the slaves are automatically assigned to the superior and inferior, which is advantageous also in terms of usability.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a schematic explanatory view of the same.

FIG. 3 is a schematic explanatory diagram of a communication cable.

FIG. 4 is a flowchart showing an inspection operation.

FIG. 5 is a flowchart showing an inspection operation.

FIG. 6 is an explanatory diagram showing a connection example of a wire harness.

FIG. 7 is a time chart showing sampling timing.

FIG. 8 is an enlarged explanatory view of the same.

FIG. 9 is a schematic view of an inspection state.

FIG. 10 is a flowchart showing a conventional inspection operation.

FIG. 11 is an explanatory diagram showing a connection example of the wire harness.

FIG. 12 is a time chart showing the timing of the same sampling.

[Explanation of symbols]

 11 Wire Harness Inspection Device 12 Signal Input / Output Means 13 Normal Wiring Data Storage Means 14 Collation Judging Means 15 Master / Slave Setting Means 16 Synchronizing Means 17 Communication Means 18 Controller 19 Communication Cable 20 Upper Machine Connection 21 Lower Machine Connection 22 Wire Harness 23 Relay cable 24 Inspected harness connection part

Claims (4)

[Claims] 1. A wire harness inspecting apparatus for inspecting the quality of a wiring state by detecting the presence or absence of continuity between wiring positions of a wire harness, for connecting to another wire harness inspecting apparatus by a communication cable. And a lower-level machine connection section, a tested-harness connection section whose inspected wire harness side is connected, and signal input / output means for inputting / outputting a signal to / from each wiring of the connected wire harness. , A data storage unit for storing inspection information, a collation determination unit for comparing the inspection information stored in the data storage unit with the detected data to determine pass / fail, and a wire harness inspection apparatus itself for information management / determination / A master / slave setting hand that sets whether the master unit that controls processing or the slave unit that is under the control of the master unit And a synchronization unit for timing the parallel processing between the wire harness inspection devices connected to each other, a communication unit for transmitting and receiving data through the communication cable, and a control unit for controlling each unit. Wire harness inspection device characterized by. 2. The master / slave setting means automatically assigns the master / slave units to the upper / lower order according to the connection state of the upper / lower device connection section via the communication cable. The wire harness inspection device according to claim 1. 3. The inspection information is downloaded from a master machine between the wire harness inspection apparatuses connected to each other to a slave machine, and parallel processing is performed by each inspection apparatus according to the inspection information. The wire harness inspection device according to claim 1. 4. The wire harness inspection device according to claim 1, wherein the timing of the parallel processing by the synchronizing means is performed by a common timing clock.